Combing machine



July 31, 1928. 1,678.822

J. w. NASMITH COMBING MACHINE Filed Aug. 9, 1927 2 Sheets-Sheet l V H18 IHVCIIOTI- 8 1 #mM July 31, 1928.

J. w. NASMITH COMBING MACHINE 2 Sheets-Shegt 2 By His fiI/orney- Filed Aug. 9, 1927 '7 I (3! Patented July 31, 1928. a a

UMTED STATES PATENT/OFFICE.

JOHN WILLIAM NASMITH, OF HEATON MERSEY, MANCHESTER, ENGLAND.

oomnmo MACHINE.

Application filed August 9, 1927, Serial No. 213,828, and inGreat Britain March 1, 19277 In the original Nasmith combing machines, contact between the lap and plate. Means as in many previous machines a single feed are provided for giving the rollers bodily roller resting on the lower j aw of the nipper movement to correspond with the movement was employed with the object, that when of the plate, and the usual ratchet motion 5 the nipper opened in moving forward to the may be employed to rotate the rollers at the 55 detaching rollers the tips of the fibres formdesired period, for feed purposes. ing the nipper tuft'should be presented di- "In the British patent specification No. rectly into the'nip of the said rollers to en- 188,611 is described apparatus whereby the sure a perfect piecing and utilize the full feed (draws back a short length of lapjbeforcj' l forward motion of the rollers by enabling the nipper closes, .to avoid accumulation of 60 them to seize the tips of the said tuft very good fibres behind the to comb with the early in their forward movement. 'Thisis subsequent withdrawal of such fibres as well shown in the drawing to my British waste. The two roller feed, the object of patent specification 16001/OL; It will be these present improvements, can be very l obvious that if a second roller were mountbeneficially applied to this type ofapparatus, 65 ed on the top of the roller F of the said which had proved very satisfactory in prac drawing and the lap passed between them tice, or to an apparatus wherein this draw the tips of the projecting tuft would be less back principle is not resorted to, but the satisfactorily presented to the nip of the said feedin two 'modifications will. now be rollers D, d and would in fact-touch the fully described inconnection with apparatus 70 roller D low down so that it would have in which this-draw. back is employed, ref-erv to turn some distance before the tips could .ence being had to the accompanying drawreach the nipping point between the two ings' wherein: I I rollers. This wouldinterfere with the ex- Figure 1 isa partial section through one cellence of the piecing especially with the head of a Nasmith comber. 1 75 shorter cottons, and also retard the entry of Figure 2 is a partial front elevation of the the top comb into the lap, as the detaching nipper. I a V rollers must take up a certain amount of Figure 3 is .a plan View of the nipper plate slack before pulling the tuft into the top and bottom roller.

.Figure tis .a side elevation partly in sec- 0 The single feed roller and plate are very 'tion showing a modification wherein the-lowpractical and many thousands of'apparatuses er feed roller is moved back'positively to so constructed are at work, but there rereflect the drawback, and I mains the fact that the lower side of the Y'Figures 5 and 6 are fragmentary detail lap must slide over the stationary nipper views of parts shown inFigure 5. 5 plate, and it is a desideratum that the ad- Referring first to the modification of Fig vantages of the two roller feed which avoids ures 1, 2, d 3 th bi li d -"i frictional sliding of the lap at any point, and t d t, C d 1) d are th d t hi the advantages of the roller and plate feed, ll -h nipper' bridge B is bolted at 40 which presents the tuft in the most eflicient each end'to nipper cheeks K hinging on the vmanner to the nip of the detaching rollers, dj t bl nipper i t N T th b id shouldbe combined in one apparatus. It is is Secured the bottom Dipper j 1 hi h Q l f y Pr improvements to swings to and fro between the radii 2 and 3, p Y Such pp at d to end receiving its motion from the usual operating pp Plate f Yvlth a P of shaft through'the connecting rod 4: hinged feed rollers the nip of which is substantially on th t d 5 hi h i Secured i -th h k 011 a Plan0 with the upper face of the plate K. For clearness the uppernipper jaw and That is to say the roller nip is sufliciently arms J Figure 2-hinging onthe pin 6-isnot near .to the'plate surface to fulfill its funcshown in Figure 1. F is the top'feed roller 50 tion of a roller feed whilst avoidin sliding resting on the bottom .feed roller f, the nipper aw shown in plan in Figure 3 is cut out so that the bottom feed roller can be dropped so as just to clear the cylinder needles and in this way the point of contact between F and f is only slightly higher than in the old arrangement where a single roller rests on the nipper plate and the tuft is correctly presented to the nip of the roller D d as approximately indicated "by the heavy dotted line Figure 1. The roller f is carried in the bearings 7 adjustable on the bri lge c Also hinged on stud is the lever 8 having hinged to its upper end on the pin 9 the rod R at liberty to slide freely in the projection 10 cast on the back of K. The rod R at a given pont in the forward swing of the nipper comes in'contact with the pin P secured in the fixed but adjustable frame 1.1 ('FigureQ) that carries the nipper pivots N. The contactof the rod R with pin 1, near the end of the forward movement of the nipper, moves the lever 8 round its pivot 5 and set screw 12 is carried away from the face 13 of cheek K against which it rests normally.

This movement but in the opposite direction is communicated to the bearing 1 of the feed roller F, which is adjustable on the rod 15 by screw 16, the rod 15 being hinged at 17 on the lever 8. The feed roller F therefore, in addition to its rotation by the 'usual ratchet (indicated at 18 Figure 2) receives a bodily forward movement, when thenipper swings backwards the rod R leaves the pm 7 'P and allows screw'lZ under influence of spring-19 to again contact with face 13 so that the roller F 1s drawn bodily backwards rotating the roller f an amount which can.

be regulated by the screw 12 and in thisway by very simple means the advantages of a draw back feed are secured and combined with the advantages of a double roller.

The spring 19 serves the'do'uble purpose of holding 12 securely against face 13 until forced therefrom by contact of R and P and putting the necessary pressure on thc top feed roller F through the lever 20 hinged on pin 21 secured in cheeks K and carrying bowls 22 pressing on the rod 15. The distance of the nip of the feed rollers F f from thelip of the nipper can beadjusted either by readjusting the bearings 7 of roller f or by moving hearing 14 on red 15 or by; both.

' It will be obvious that if the drawback before referred to which is effected by the particular swinging relation described of cheeks K and lever 8 by their accessories of rod ,1? and 'spring isnotdesired, the top roller F can easily be arranged to swing with the-said cheeks and the nipper plate and an extended.- description of such an arrangement is deemed unnecessary. i l

Where the nature of the fibre or other circumstances make it expedient, in applying the drawback before referred to, the two roller feed may be modified by mounting ievasaa the two rollers in one moving member which draws them back together. From the foreis seen in Figure 4, C is the usual combing cylinder and D one of the detaching rollers. F'and f are the feed rollers, and 1' the lower nipper jaw which swings in an arc, the limits of the swing thereof being indicated by'the broken lines 2-3, this swinging motion be ing effected upon the pivot Nby the connect ing rod 1 hinged on the stud 5. The upper nipper jaw is omitted for clearness, but a pin whereon it is carried is shown at 6.

In'thc frame (not shown) which carries the pivot N is fixedthe pinl and each nipper cheekK carries agpin 21 onwhich is Figure 4, and where hinged a lever 23 forked at the lower end 24 to receive a bearing bracket let for the upper roller F, seethe detail Figure 1; This bearing bracket 14 is slightly adjustable on a rocker bar 25-.pivoting on a pin 26 carried by the lever 23 and to the tail end of this bar 25 is anchored the tension spring 19. On the lever 23 is formed the projecting face 27 which serves as a contact piece and on; a lug V 28 cast on a cheek K is the adj ustable screw stop 29,- Lever 23 alsocarries an adjustable screw 30 in the posit on shown in Figure 1 wherethe end of the said screw 'may make contact with the pin" Pxon the machine framing.

The lower ried in bearings 31 fixed to the front face 32 of a lever- 23, each bearing being formed with the cup 33 to receive the brass bush of roller of the roller pair is car l l aneck of the shaft of the lower roller j oth rollers F and f are therefore borneby the levers 9,8 and partake equally of the movement of the said levers.

In operation asthe nipper jaw 1 swings forward and assumes the position shown in j the drawing Figure 1, around the center N, v I

the screw stop 30 comes against fixed pin P,

thus causing each lever 23 to turn' slightly around its center 21. This movement of the levers causes the roller pair F and to swing able by means of the screw 29, and such adforward bodily, to an extent which is adjust 1 justment will be effected as des red in: the

actual operation of the apparatus, o allow of the bodily movement of the roller pair F and f in advance of the movement of the nipper jaw 1. When the movement of the nipper jaw 1 is reversed the spring :19 comes into operation and drawing up the tail of the rocker bar the levers E23 again assume their original position the contact face 27 again coming upon the limiting stop. 29.

here is tlierefore a definite amount of drawbacli imparted to the roller pair F and f in relation to the nipperfj'aw l, the'extent of the"draw-back depending'upon the adjust able screw stops already referred to. p

' As will be seen, the spring 19 not only serves to return the roller pair F and f to its original position with the desired drawback, but it'also serves to provide top pressure on the upper roller F to give the necessary grip to the sliver held in the nip of the said roller pair. The nipper jaw is recessed as shown to an extent sufficient to allow of the desired maximum movement within the said recess of the lower roller 7.

I claim 1. In a combing machine, a swinging nipper plate and a pair of feed rollers adapted to swing with the said plate, the nip of the roller pair being substantially flush with the upper surface of the said plate, and means for imparting rotary motion to the said rollers.

2. In a cotton combing machine, a swinging nipper plate and a pair of feed rollers adapted to swing with the said plate, the nip of the roller pair being substantially flush with the upper surface of the said plate, means for imparting rotary motion to the said rollers, means for carrying the upper roller of the roller pair independently of the swinging nipper plate but in contactwith the lower* roller, and means for imparting bodily movement to the said upper roller.

3. In a cotton combing machine, a swinging nipper plate and a pair of feed rollers adapted to swing with the said plate, the nip of the roller pair being substantially flush with the upper surface of the said plate, means for imparting rotary motion to the said rollers, a member on which the upper roller is borne, a recess in the nipper plate in which the lower roller is borne positioned and in which the said lower lower roller may rotate, the upper and lower rollers being in frictional contact, and means for imparting bodily motion to the upper roller.

4. In a cotton combing machine, a swingnipper plate and a pair of feed rollers adapted to swing with the said plate the nip of the roller pair being substantially flush with the upper surface of the said plate. a ratchet gearing to give rotary motion to the upper roller as it moves bodily forward with the nipper plate, a member on which the upper roller is borne, a recess in the nipper plate in which the lower roller is positioned and in which the said lower roller may'slide, the upper and lower rollers being in frictional contact, and means for imparting bodily motion to the upper roller and thus also to the lower roller.

5. In a cotton combing machine, a swinging nipper plate,--and a pair of feed rollers adapted toswmg with'the said-plate, the nip" of the roller being substantially flush with,

the upper surface of the said plate, means for imparting rotary-motion to the said rollers, a memberon which the upper roller is borne, a recess in the nipper plate in which the lowcrroller is slidably positioned, the upper and lower rollers-being in frictional contact,

a swinging member bearing the nipper plate, and means for imparting bodily motion to the upper roller and thus to the lower roller, from the said swinging plate bearing member.

6. In a cotton combing machine, a swing- .ing nipper plate and a pair of feed rollers adapted to swing with the said plate, the

nip of the roller pair being substantially flush with the upper surface of the said plate, means for imparting rotary motion to' said rod abuts on the swinging of the said swnging member, and spring means for maintaining the said swinging member and the upper end of the rod actuating lever in close but ad ustable contact until separated by the forward swing of the plate bearing swinging member.

7. In a cotton combing machine, a swing-,

in nipper plate and a pair of feed rollers adapted to swing with the said plate, the nip of the roller pair being, substantially flush with the upper surface of the said plate, means for imparting rotary motion to the said rollers, means for carrying the two rollers in one swinging member but independently of the swinging nipper plate and in frictional contact with each other, and means for imparting bodily movement to the said upper roller and lower rollers which movement is of a desired path and speed relation to those of the nipper plate.

8. In a cotton combing machine, a swingthe nipper plate bearing swinging member, a fixed stop against which the end of the.

ing nipper plate and a pair of feed rollers 7 adapted to swing with the said plate, the nip of the roller pair being substantially flush with the upper surface of the said plate, means for imparting rotary motion to the said rollers, a swinging member bearing the nipper plate, levers pivoted on cheeks which comprise the said swinging member, bearings for the upper roller said bearings being carried by arms pivoted to the levers, spring means attached to one end of each such arm to apply pressure to the upper roller and to retain the levers in their extreme backward position until constrained to move against the spring tension, cup bearings for the lovver roller, said bearings being earriedby the upper roller bearing carrier and adjustable stops to limit the movement of the levers in both directions around their pivots, one of the said stops serving as con- 10 straining means to cause the roller bearin end of the pivoted levers to move forwar when theswinging' nipper jaw moves for- Ward.

In testimony whereof I 4 have hereunto 1 set my hand.

JoHiv WILLIAM NASMITH. 

